Will the skin on the nipples which are two toned return to normal color after mammoplasty and nipple grafting ?

My skin on my nipples lifted and peeled 2 weeks after mammoplasty and free nipple grafting . I followed my PS instructions at that time and am moisturizing the nipple area twice daily. The problem is, they are two-toned, and I am concerned if they will ever return to their normal coloration. I am an african american